Journal of Korea Technical Association of The Pulp and Paper Industry (펄프종이기술)

Korea Technical Association of the Pulp and Paper Industry (한국펄프종이공학회)
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Effects of Mixing Ratio of ONP and OCC on Physical Properties of Pulp Molds for Cushion Packaging Materials

완충포장소재를 위한 고지배합비율에 따른 펄프몰드의 물성 변화 연구

  • 박인식 (경북과학대학 패키징매니지먼트) ;
  • 김재능 (연세대학교 패키징학과) ;
  • 김대용 (경북신기술포장연구센터) ;
  • 이윤석 (연세대학교 패키징학과)
  • Published : 2008.03.31
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Abstract

As the demands of environment protection increases, the pulp mold container is developed to substitute for EPS (expanded polystyrene) as a shock absorbing packaging material. The water-absorbing ratio and mechanical properties such as tensile strength and compressive strength of pulp mold are important factors to evaluate its shock absorbing characteristics. Influences of mixing ratios of ONP (old newspaper) and OCC (old corrugated container) on physical properties of pulp mold were investigated at various conditions of temperature and relative humidity. The optimum mixing ratio of ONP and OCC was also searched based on physical properties. The results showed that when relative humidity was increased from 60% to 90%, the water absorption ratio of pulp mold increased significantly, tensile strength decreased 20$\sim$30%, and compressive strength decreased 10$\sim$20%. In addition, the optimum mixing ratio of ONP and OCC was found to be 50%:50%.

Keywords

References

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